I have been blessed with a bounty of hand tools and wood these past few weeks, it's a long story, after returning from my latest trip, and after sorting through the tools, I found this infill plane among many other gems.
It's a 1" Infill shoulder plane. At this time I cannot see any markings, the hand plane is ready to use now, the edge is excellent and the body is square and solid. I love this plane, and I'll use it.
7.5" long by 3" tall, heavy with a square sole to side for accurate registration. Can't wait to use it!